DR. MARTIN F. STEIN M. D.
NPI 1871901397
Internal Medicine - Endocrinology, Diabetes & Metabolism in Portola Valley, CA

Q: What is Martin Stein's NPI number?

The NPI number for Martin Stein is 1871901397. It was assigned to this individual provider in the NPPES registry on July 28, 2014.

Q: What is Martin Stein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Q: When was this NPI record last updated?

The NPPES record for Martin Stein was last updated on July 28, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 28, 2014

145 DEER MEADOW LN, PORTOLA VALLEY, CA 94028(650) 529-1786(650) 529-1786 Get Directions Write a Review

NPPES record last updated: July 28, 2014. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Dr. Martin F. Stein M. D. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARTIN F. STEIN M. D. (NPI 1871901397) is an individual endocrinology, diabetes & metabolism provider in Portola Valley, California, licensed in California (C26329) and active in the NPI registry since July 2014.

NPPES Registry Identity

NPI1871901397

Entity TypeIndividualMale

Primary Taxonomy207RE0101X

Provider Legal NameDR. MARTIN F. STEINCredential: M. D.

Location Address145 DEER MEADOW LNPortola Valley, CA 94028-7608

Mailing AddressPo Box 7581Menlo Park, CA 94026-7581 · (650) 529-1786 · Fax (650) 529-1786

Phone(650) 529-1786

Fax(650) 529-1786

Sole ProprietorYes

Enumeration DateJuly 28, 2014

✔ NPI 1871901397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in CA · C26329

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

145 DEER MEADOW LN, Portola Valley, CA 94028

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Martin Stein's NPI number?

The NPI number for Martin Stein is 1871901397. It was assigned to this individual provider in the NPPES registry on July 28, 2014.

Where is Martin Stein located?

Martin Stein practices at 145 Deer Meadow Ln, Portola Valley, CA 94028. The listed phone number is (650) 529-1786.

What is Martin Stein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Martin Stein was last updated on July 28, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.